-// Try to guess if MSG_wait destroys communications or not, because it
-// changed after SimGrid 3.5.
-//
-// Use some define introduced after that. fixme: dirty hack
-//
-#if defined(SIMGRID_VERSION)
-# define MSG_WAIT_DESTROYS_COMMS 0
-#else
-# define MSG_WAIT_DESTROYS_COMMS 1
-#endif
+#include <simgrid_config.h>
+
+#if !defined(SIMGRID_VERSION) // ========== SimGrid <= 3.5 ============= //
+# error "Unsupported SimGrid version. Need version > 3.5"
+#endif // ============================================================= //